$ git clone -n https://src.fedoraproject.org/rpms/kalzium.git /var/lib/mock/f40-build-2399084-60549/root/chroot_tmpdir/scmroot/kalzium
Cloning into '/var/lib/mock/f40-build-2399084-60549/root/chroot_tmpdir/scmroot/kalzium'...
$ git fetch origin 5d6284a51a83c41242597e10cefc418e2647fdd0:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kalzium
 * [new ref]         5d6284a51a83c41242597e10cefc418e2647fdd0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5d6284a 24.01.95