$ git clone -n https://src.fedoraproject.org/rpms/gap-pkg-fining.git /var/lib/mock/f39-build-1585859-38155/root/chroot_tmpdir/scmroot/gap-pkg-fining
Cloning into '/var/lib/mock/f39-build-1585859-38155/root/chroot_tmpdir/scmroot/gap-pkg-fining'...
$ git fetch origin 310eb3d913d5b531dfc0d6c49d2d6035eae357e4:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gap-pkg-fining
 * [new ref]         310eb3d913d5b531dfc0d6c49d2d6035eae357e4 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 310eb3d Version 1.5.6