$ git clone -n https://src.fedoraproject.org/rpms/a2ps.git /var/lib/mock/f39-build-1639184-40102/root/chroot_tmpdir/scmroot/a2ps
Cloning into '/var/lib/mock/f39-build-1639184-40102/root/chroot_tmpdir/scmroot/a2ps'...
$ git fetch origin d3e929a2437353abf308e1d436a168df4fe853bb:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/a2ps
 * [new ref]         d3e929a2437353abf308e1d436a168df4fe853bb -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d3e929a 2225694 - a2ps: FTBFS in Fedora rawhide/f39