I set up a new Jenkins job which all it does is takes 2 input parameters, and generates a git changelog, using the Jenkins plugin. It then saves CHANGELOG.txt as a build artifact.

When I tried running this job using the short (10-char) SHA-1s, I got an error.
Then I retried using the full SHA-1s, and it succeeded.

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Failed Run: Inputs were 1c9136c7e3a and efc6a0abae9:
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—
--- Git Changelog —
---
Creating changelog CHANGELOG.txtInvalid id: b4f425aa89b
Archiving artifacts
ERROR: No artifacts found that match the file pattern "CHANGELOG.txt". Configuration error?
ERROR: ‘CHANGELOG.txt’ doesn’t match anything
Build step 'Archive the artifacts' changed build result to FAILURE
Finished: FAILURE

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Successful run: Inputs were 1c9136c7e3ab08f4382a8b2bd38cd94ca0703dc8 and efc6a0abae998ae6db04d26ed5c696e288036e7d:
=========================================================
—
--- Git Changelog —
---
Creating changelog CHANGELOG.txt
Archiving artifacts
Finished: SUCCESS