$ git clone -n https://src.fedoraproject.org/rpms/gnatcoll.git /var/lib/mock/f40-build-753322-117192/root/chroot_tmpdir/scmroot/gnatcoll
Cloning into '/var/lib/mock/f40-build-753322-117192/root/chroot_tmpdir/scmroot/gnatcoll'...
$ git fetch origin 75aa8e95da1e103441f27848da77ed2eb31deccf:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gnatcoll
 * [new ref]         75aa8e95da1e103441f27848da77ed2eb31deccf -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 75aa8e9 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild