Test Failure t5510,t5562 - was RE: [ANNOUNCE] Git v2.37.0-rc1

Subtests t5510.69, 71, 97, 99, 125, 127, 147, 149, 151, 153, 155, 157, 159, 161, 163, 165, 167, 170 failed in rc1 on the NonStop ia64 platform. These were working in rc0, but after analysis, I do not think that is relevant. Here is what we see for subtest 69:

expecting success of 5510.69 'link prune fetch.prune=unset remote.origin.prune=unset fetch.pruneTags=unset remote.origin.pruneTags=unset --prune origin refs/tags/*:refs/tags/*; branch:kept tag:pruned':
...
                        git fetch "file:///home/jenkins/.jenkins/workspace/Git_Pipeline@2/t/trash directory.t5510-fetch/." "+refs/heads/*:refs/remotes/origin/*" &&
...
                        git$git_fetch_c fetch --prune "file:///home/jenkins/.jenkins/workspace/Git_Pipeline/t/trash directory.t5510-fetch/." refs/tags/*:refs/tags/* &&

What seems to be happening is that the test script is computing the wrong parent directory in the second case, cutting the @2. We use Jenkins for our builds and occasional multiple builds run. The @2 is Jenkins way of running in another place. This seems to be confusing the script parsing of the parent, causing the issue. When I rebuilt and test in the primary directory, the failures disappeared because no @2.

t5562 also seems to have the same issue.