$ git clone -n https://src.fedoraproject.org/rpms/gap-pkg-fr.git /var/lib/mock/f40-build-2590691-62633/root/chroot_tmpdir/scmroot/gap-pkg-fr
Cloning into '/var/lib/mock/f40-build-2590691-62633/root/chroot_tmpdir/scmroot/gap-pkg-fr'...
$ git fetch origin ee3f336af66fef9428f329d2469b09035665db16:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gap-pkg-fr
 * [new ref]         ee3f336af66fef9428f329d2469b09035665db16 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ee3f336 Rebuild for gap 4.13.0