$ git clone -n https://src.fedoraproject.org/rpms/perl-Test-Directory.git /var/lib/mock/f39-build-1439597-32269/root/chroot_tmpdir/scmroot/perl-Test-Directory
Cloning into '/var/lib/mock/f39-build-1439597-32269/root/chroot_tmpdir/scmroot/perl-Test-Directory'...
$ git fetch origin 1e6b84418e1a0d75e03b529b87ad204602e86e5e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Test-Directory
 * [new ref]         1e6b84418e1a0d75e03b529b87ad204602e86e5e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1e6b844 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild