$ git clone -n https://src.fedoraproject.org/rpms/perl-String-Diff.git /var/lib/mock/f39-build-1514653-35645/root/chroot_tmpdir/scmroot/perl-String-Diff
Cloning into '/var/lib/mock/f39-build-1514653-35645/root/chroot_tmpdir/scmroot/perl-String-Diff'...
$ git fetch origin 1e55a542241ee8ac415490d6dd7e576bc2877ed4:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-String-Diff
 * [new ref]         1e55a542241ee8ac415490d6dd7e576bc2877ed4 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1e55a54 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild