$ git clone -n https://src.fedoraproject.org/rpms/sediment.git /var/lib/mock/f41-build-1049381-19179/root/chroot_tmpdir/scmroot/sediment
Cloning into '/var/lib/mock/f41-build-1049381-19179/root/chroot_tmpdir/scmroot/sediment'...
$ git fetch origin 43f97e8349abd3f703d530e1534c29f7d480e6d5:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/sediment
 * [new ref]         43f97e8349abd3f703d530e1534c29f7d480e6d5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 43f97e8 Eliminate use of obsolete %patchN syntax (#2283636)