$ git clone -n https://src.fedoraproject.org/rpms/perl-Test-TempDir.git /var/lib/mock/f39-build-1435207-31977/root/chroot_tmpdir/scmroot/perl-Test-TempDir
Cloning into '/var/lib/mock/f39-build-1435207-31977/root/chroot_tmpdir/scmroot/perl-Test-TempDir'...
$ git fetch origin 9933ff0ae4ec8f2fc61a342216888cff9624ec99:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Test-TempDir
 * [new ref]         9933ff0ae4ec8f2fc61a342216888cff9624ec99 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9933ff0 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild