$ git clone -n https://src.fedoraproject.org/rpms/ois.git /var/lib/mock/f41-build-1022683-18093/root/chroot_tmpdir/scmroot/ois
Cloning into '/var/lib/mock/f41-build-1022683-18093/root/chroot_tmpdir/scmroot/ois'...
$ git fetch origin 134eec38cf627684f0a156ee4c892aa6b0211fff:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ois
 * [new ref]         134eec38cf627684f0a156ee4c892aa6b0211fff -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 134eec3 Eliminate use of obsolete %patchN syntax (#2283636)