[JENKINS-55884] Loading library fails with commit referenced by tag but not any branch

We have a library loaded dynamically in Pipeline script with 

library "mylib@​8c8a4a95f3187b82112cc2eb8539ba470c1eebff"

the sha1 in question is tagged on the remote, but not contained in any branch

Jenkins fails to load the library:

Loading library mylib@​8c8a4a95f3187b82112cc2eb8539ba470c1eebff
Attempting to resolve 8c8a4a95f3187b82112cc2eb8539ba470c1eebff from remote references...
> git --version # timeout=10
using GIT_SSH to set credentials Jenkins Account
> git ls-remote -h ssh://git@​our-bitbucket.com:7999/libProject/mylib.git # timeout=10
Could not find 8c8a4a95f3187b82112cc2eb8539ba470c1eebff in remote references. Pulling heads to local for deep search...
> git rev-parse --is-inside-work-tree # timeout=10
Setting origin to ssh://git@​our-bitbucket.com:7999/libProject/mylib.git
> git config remote.origin.url ssh://git@​our-bitbucket.com:7999/libProject/mylib.git # timeout=10
Fetching origin...
Fetching upstream changes from origin
> git --version # timeout=10
> git config --get remote.origin.url # timeout=10
using GIT_SSH to set credentials Jenkins Account
> git fetch --tags --progress origin +refs/heads/:refs/remotes/origin/
> git rev-parse 8c8a4a95f3187b82112cc2eb8539ba470c1eebff^{commit} # timeout=10
> git branch -a -v --no-abbrev --contains 8c8a4a95f3187b82112cc2eb8539ba470c1eebff # timeout=10
Could not find a branch containing commit 8c8a4a95f3187b82112cc2eb8539ba470c1eebff
[Bitbucket] Notifying commit build result
[Bitbucket] Build result notified
ERROR: No version 8c8a4a95f3187b82112cc2eb8539ba470c1eebff found for library mylib

Originally reported by phoenikz, imported from: Loading library fails with commit referenced by tag but not any branch

• status: Open
• priority: Major
• component(s): git-plugin
• resolution: Unresolved
• votes: 2
• watchers: 4
• imported: 2025-12-02

Raw content of original issue

We have a library loaded dynamically in Pipeline script with 

library "mylib@8c8a4a95f3187b82112cc2eb8539ba470c1eebff"

the sha1 in question is tagged on the remote, but not contained in any branch

Jenkins fails to load the library:

Loading library mylib@8c8a4a95f3187b82112cc2eb8539ba470c1eebff
Attempting to resolve 8c8a4a95f3187b82112cc2eb8539ba470c1eebff from remote references...
 > git --version # timeout=10
using GIT_SSH to set credentials Jenkins Account
 > git ls-remote -h ssh://git@our-bitbucket.com:7999/libProject/mylib.git # timeout=10
Could not find 8c8a4a95f3187b82112cc2eb8539ba470c1eebff in remote references. Pulling heads to local for deep search...
 > git rev-parse --is-inside-work-tree # timeout=10
Setting origin to ssh://git@our-bitbucket.com:7999/libProject/mylib.git
 > git config remote.origin.url ssh://git@our-bitbucket.com:7999/libProject/mylib.git # timeout=10
Fetching origin...
Fetching upstream changes from origin
 > git --version # timeout=10
 > git config --get remote.origin.url # timeout=10
using GIT_SSH to set credentials Jenkins Account
 > git fetch --tags --progress origin +refs/heads/:refs/remotes/origin/
 > git rev-parse 8c8a4a95f3187b82112cc2eb8539ba470c1eebff^{commit} # timeout=10
 > git branch -a -v --no-abbrev --contains 8c8a4a95f3187b82112cc2eb8539ba470c1eebff # timeout=10
Could not find a branch containing commit 8c8a4a95f3187b82112cc2eb8539ba470c1eebff
[Bitbucket] Notifying commit build result
[Bitbucket] Build result notified
ERROR: No version 8c8a4a95f3187b82112cc2eb8539ba470c1eebff found for library mylib

Jenkins 2.121.3 on RedHat Linux<br/>
Git plugin 3.9.2 <br/>
Git Client Plugin 2.7.6<br/>
Bitbucket Branch Source Plugin 2.4.0

Start by tracing the library version-resolution path that produces the reported git ls-remote, fetch --tags, rev-parse, and branch --contains commands. Reproduce the failure with a commit reachable by a tag but not a branch, then verify that library loading resolves that version successfully without weakening the existing remote-reference checks.