Error at importing project due to long PATH

Windows 10
Mbed CLI 1.8.2
Python 2.7.15

I'm unable to import an example app within a long path:

### Steps to reproduce:

```
C:\Users\ms\gfgsfgfgfsgf\sdgoingrgnr\gisknnsonjonjf\onjsonjsousoubgs\3>mbed import https://github.com/ARMmbed/simple-mbed-cloud-client-template-restricted -v
```

### Error output:

```

[mbed] Working path "C:\Users\ms\gfgsfgfgfsgf\sdgoingrgnr\gisknnsonjonjf\onjsonjsousoubgs\3" (directory)
[mbed] Importing program "simple-mbed-cloud-client-template-restricted" from "https://github.com/ARMmbed/simple-mbed-cloud-client-template-restricted" at latest revision in the current branch
[mbed] Trying to guess source control management tool. Supported SCMs: bld, git, hg
[mbed] Found matching cached repository in "C:\Users\ms\.mbed\mbed-cache\github.com\ARMmbed/simple-mbed-cloud-client-template-restricted"
[mbed] Carbon copy from "C:\Users\ms\.mbed\mbed-cache\github.com\ARMmbed/simple-mbed-cloud-client-template-restricted" to "C:\Users\ms\gfgsfgfgfsgf\sdgoingrgnr\gisknnsonjonjf\onjsonjsousoubgs\3\simple-mbed-cloud-client-template-restricted"
[mbed] Writing cache lock file C:\Users\ms\.mbed\mbed-cache\github.com\ARMmbed/simple-mbed-cloud-client-template-restricted\.lock\pid for pid 6304
[mbed] Cache lock file exists with my pid ("6304"). Cleaning up.
[mbed] Setting url to "https://github.com/ARMmbed/simple-mbed-cloud-client-template-restricted" in C:\Users\ms\gfgsfgfgfsgf\sdgoingrgnr\gisknnsonjonjf\onjsonjsousoubgs\3\simple-mbed-cloud-client-template-restricted
[mbed] Cleaning up Git index
[mbed] Update cached copy from remote repository
[mbed] Fetching revisions from remote repository to "simple-mbed-cloud-client-template-restricted"
[mbed] Exec "git fetch --all --tags" in "C:\Users\ms\gfgsfgfgfsgf\sdgoingrgnr\gisknnsonjonjf\onjsonjsousoubgs\3\simple-mbed-cloud-client-template-restricted"
Fetching origin
[mbed] Discarding local changes in "simple-mbed-cloud-client-template-restricted"
[mbed] Checkout "master" in simple-mbed-cloud-client-template-restricted
[mbed] Exec "git checkout master -f -q" in "C:\Users\ms\gfgsfgfgfsgf\sdgoingrgnr\gisknnsonjonjf\onjsonjsousoubgs\3\simple-mbed-cloud-client-template-restricted"
[mbed] Writing cache lock file C:\Users\ms\.mbed\mbed-cache\github.com\ARMmbed/simple-mbed-cloud-client-template-restricted\.lock\pid for pid 6304
[mbed] Cache lock file exists with my pid ("6304"). Cleaning up.
[mbed] Adding library "mbed-os" from "https://github.com/ARMmbed/mbed-os" at rev #610e35ddc6d5
[mbed] Trying to guess source control management tool. Supported SCMs: bld, git, hg
[mbed] Found matching cached repository in "C:\Users\ms\.mbed\mbed-cache\github.com\ARMmbed/mbed-os"
[mbed] Carbon copy from "C:\Users\ms\.mbed\mbed-cache\github.com\ARMmbed/mbed-os" to "C:\Users\ms\gfgsfgfgfsgf\sdgoingrgnr\gisknnsonjonjf\onjsonjsousoubgs\3\simple-mbed-cloud-client-template-restricted\mbed-os"
[mbed] Writing cache lock file C:\Users\ms\.mbed\mbed-cache\github.com\ARMmbed/mbed-os\.lock\pid for pid 6304
[mbed] Cache lock file exists with my pid ("6304"). Cleaning up.
[mbed] Setting url to "https://github.com/ARMmbed/mbed-os" in C:\Users\ms\gfgsfgfgfsgf\sdgoingrgnr\gisknnsonjonjf\onjsonjsousoubgs\3\simple-mbed-cloud-client-template-restricted\mbed-os
[mbed] Cleaning up Git index
[mbed] Update cached copy from remote repository
[mbed] Fetching revisions from remote repository to "mbed-os"
[mbed] Exec "git fetch --all --tags" in "C:\Users\ms\gfgsfgfgfsgf\sdgoingrgnr\gisknnsonjonjf\onjsonjsousoubgs\3\simple-mbed-cloud-client-template-restricted\mbed-os"
Fetching origin
remote: Enumerating objects: 3111, done.
remote: Counting objects: 100% (3111/3111), done.
remote: Compressing objects: 100% (3/3), done.
remote: Total 7984 (delta 3108), reused 3108 (delta 3108), pack-reused 4873
Receiving objects: 100% (7984/7984), 6.23 MiB | 8.22 MiB/s, done.
Resolving deltas: 100% (5416/5416), completed with 1034 local objects.
From https://github.com/ARMmbed/mbed-os
* [new branch] feature-hal-spec-usb-deiv -> origin/feature-hal-spec-usb-deiv
+ 05d77ab77...fddabf8ee feature-hal-spec-usb-device -> origin/feature-hal-spec-usb-device (forced update)
* [new branch] feature-lorawan-1-1 -> origin/feature-lorawan-1-1
f15dbf2c3..eea338c90 feature-posix -> origin/feature-posix
+ b622d8df9...0f24dd183 feature-secure-time -> origin/feature-secure-time (forced update)
+ f973fb136...58cdab255 feature-watchdog -> origin/feature-watchdog (forced update)
+ 7765de7c9...26a3d121d feature_namespace -> origin/feature_namespace (forced update)
8bf51be75..0fe636995 master -> origin/master
c53d51fe9..bf6f2c3c6 mbed-os-5.10 -> origin/mbed-os-5.10
763f0f410..04790ce0b release-candidate -> origin/release-candidate
t [tag update] latest -> latest
* [new tag] mbed-os-5.10.2 -> mbed-os-5.10.2
* [new tag] mbed-os-5.10.3 -> mbed-os-5.10.3
* [new tag] tools-release-5.10.2 -> tools-release-5.10.2
[mbed] Discarding local changes in "mbed-os"
[mbed] Discarding cached repository
[mbed] Exec "git clone https://github.com/ARMmbed/mbed-os C:\Users\ms\gfgsfgfgfsgf\sdgoingrgnr\gisknnsonjonjf\onjsonjsousoubgs\3\simple-mbed-cloud-client-template-restricted\mbed-os" in "C:\Users\ms\gfgsfgfgfsgf\sdgoingrgnr\gisknnsonjonjf\onjsonjsousoubgs\3\simple-mbed-cloud-client-template-restricted"
Cloning into 'C:\Users\ms\gfgsfgfgfsgf\sdgoingrgnr\gisknnsonjonjf\onjsonjsousoubgs\3\simple-mbed-cloud-client-template-restricted\mbed-os'...
remote: Enumerating objects: 233418, done.
remote: Total 233418 (delta 0), reused 0 (delta 0), pack-reused 233418
Receiving objects: 100% (233418/233418), 231.96 MiB | 21.92 MiB/s, done.
Resolving deltas: 100% (160939/160939), done.
error: unable to create file features/FEATURE_BLE/targets/TARGET_NORDIC/TARGET_MCU_NRF51822/sdk/source/libraries/bootloader_dfu/hci_transport/hci_mem_pool_internal.h: Filename too long
error: unable to create file features/FEATURE_BLE/targets/TARGET_NORDIC/TARGET_MCU_NRF51822/sdk/source/softdevice/common/softdevice_handler/ant_stack_handler_types.h: Filename too long
error: unable to create file features/FEATURE_BLE/targets/TARGET_NORDIC/TARGET_MCU_NRF51822/sdk/source/softdevice/common/softdevice_handler/ble_stack_handler_types.h: Filename too long
error: unable to create file features/FEATURE_BLE/targets/TARGET_NORDIC/TARGET_MCU_NRF51822/sdk/source/softdevice/common/softdevice_handler/softdevice_handler.c: Filename too long
error: unable to create file features/FEATURE_BLE/targets/TARGET_NORDIC/TARGET_MCU_NRF51822/sdk/source/softdevice/common/softdevice_handler/softdevice_handler.h: Filename too long
error: unable to create file features/FEATURE_BLE/targets/TARGET_NORDIC/TARGET_MCU_NRF51822/sdk/source/softdevice/common/softdevice_handler/softdevice_handler_appsh.c: Filename too long
error: unable to create file features/FEATURE_BLE/targets/TARGET_NORDIC/TARGET_MCU_NRF51822/sdk/source/softdevice/common/softdevice_handler/softdevice_handler_appsh.h: Filename too long
error: unable to create file features/FEATURE_BOOTLOADER/targets/TARGET_Freescale/TARGET_MCUXpresso_MCUS/TARGET_K66F/TARGET_FRDM/mbed-bootloader-k66f-block_device-sotp-v3_4_0.bin: Filename too long
error: unable to create file features/FEATURE_BOOTLOADER/targets/TARGET_Freescale/TARGET_MCUXpresso_MCUS/TARGET_MCU_K64F/TARGET_FRDM/mbed-bootloader-k64f-block_device-sotp-v3_4_0.bin: Filename too long
error: unable to create file features/FEATURE_BOOTLOADER/targets/TARGET_STM/TARGET_STM32F2/TARGET_NUCLEO_F207ZG/mbed-bootloader-nucleo_f207zg-block_device-sotp-v3.4.0-3-gdbbb.bin: Filename too long
error: unable to create file features/FEATURE_BOOTLOADER/targets/TARGET_STM/TARGET_STM32F4/TARGET_STM32F411xE/TARGET_NUCLEO_F411RE/mbed-bootloader-nucleo_f411re-block_device-sotp-v3_4_0.bin: Filename too long
error: unable to create file features/FEATURE_BOOTLOADER/targets/TARGET_STM/TARGET_STM32F4/TARGET_STM32F429xI/TARGET_NUCLEO_F429ZI/mbed-bootloader-nucleo_f429zi-block_device-sotp-v3_4_0.bin: Filename too long
fatal: cannot create directory at 'features/FEATURE_BOOTLOADER/targets/TARGET_STM/TARGET_STM32F4/TARGET_STM32F439xI/TARGET_MODULE_UBLOX_ODIN_W2/TARGET_UBLOX_EVK_ODIN_W2': Filename too long
warning: Clone succeeded, but checkout failed.
You can inspect what was checked out with 'git status'
and retry the checkout with 'git checkout -f HEAD'

[mbed] Exec "hg clone https://github.com/ARMmbed/mbed-os C:\Users\ms\gfgsfgfgfsgf\sdgoingrgnr\gisknnsonjonjf\onjsonjsousoubgs\3\simple-mbed-cloud-client-template-restricted\mbed-os" in "C:\Users\ms\gfgsfgfgfsgf\sdgoingrgnr\gisknnsonjonjf\onjsonjsousoubgs\3\simple-mbed-cloud-client-template-restricted"
abort: 'https://github.com/ARMmbed/mbed-os' does not appear to be an hg repository:
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```