$ git clone -n https://src.fedoraproject.org/rpms/x2goserver.git /var/lib/mock/f39-build-1578439-37997/root/chroot_tmpdir/scmroot/x2goserver
Cloning into '/var/lib/mock/f39-build-1578439-37997/root/chroot_tmpdir/scmroot/x2goserver'...
$ git fetch origin 47ab04c96e0384a93896ed160e523b91dcc41a5c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/x2goserver
 * [new ref]         47ab04c96e0384a93896ed160e523b91dcc41a5c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 47ab04c Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild