$ git clone -n https://src.fedoraproject.org/rpms/xss-lock.git /var/lib/mock/f45-build-39153-732/root/chroot_tmpdir/scmroot/xss-lock
Cloning into '/var/lib/mock/f45-build-39153-732/root/chroot_tmpdir/scmroot/xss-lock'...
$ git fetch origin 6290681de376cf6c6eeb089ae9dcc597348f6476:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/xss-lock
 * [new ref]         6290681de376cf6c6eeb089ae9dcc597348f6476 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6290681 Allow to build with CMake 4.0 (rhbz#2381644)