A clean `nimble build` fails

### Example

```shell
cd /tmp
git clone https://github.com/crashappsec/cap10
cd cap10
nimble build
```

### Expected behavior

`nimble build` succeeds.

### Current behavior

If a particular nimutils state was not already installed locally, `nimble build` fails and outputs:

```text
Verifying dependencies for cap10@0.3.0
Installing https://github.com/crashappsec/nimutils@#95c0657dd9d150f25ed2b8ef991cb9b9e5b05846
Downloading https://github.com/crashappsec/nimutils using git
Tip: 4 messages have been suppressed, use --verbose to show them.
tools.nim(62) tryDoCmdEx

Error: Execution of 'git -C /tmp/nimble_21368/githubcom_crashappsecnimutils_#95c0657dd9d150f25ed2b8ef991cb9b9e5b05846 checkout --force 95c0657dd9d150f25ed2b8ef991cb9b9e5b05846' failed with an exit code 128.
... Details: fatal: reference is not a tree: 95c0657dd9d150f25ed2b8ef991cb9b9e5b05846
```

### Discussion

The latest cap10 commit (https://github.com/crashappsec/cap10/commit/7af7864829e815bcad1a1ee1dfabf562894b57e7) bumped the nimutils commit to https://github.com/crashappsec/nimutils/commit/95c0657dd9d150f25ed2b8ef991cb9b9e5b05846. At the time of writing, Git can't checkout that commit because it doesn't exist on a branch at https://github.com/crashappsec/nimutils.

`nimble build` succeeds if we first checkout the previous cap10 commit, https://github.com/crashappsec/cap10/commit/39a53db58aeab37ad8ae23ffecd0b016db3a2441.

The [nimutils dev branch](https://github.com/crashappsec/nimutils/tree/dev) has a bunch of changes that I guess will merit a nimutils version bump in this repo at some point. I imagine that'll resolve the problem, but let's track it with this issue in the meantime. No rush from me.

### Versions

| Tool | Version | Date | Notes |
| :- | :- | - | - |
| Nim | 2.0.0 | 2023-08-01 | |
| Nimble | 0.14.2 | 2023-08-01 | (The version that's shipped with Nim 2.0.0) |
| Git | 2.43.0 | 2023-11-20 | |