$ git clone -n https://src.fedoraproject.org/rpms/fs_mark.git /var/lib/mock/f41-build-749037-13368/root/chroot_tmpdir/scmroot/fs_mark
Cloning into '/var/lib/mock/f41-build-749037-13368/root/chroot_tmpdir/scmroot/fs_mark'...
$ git fetch origin 05e77cad1a3d3367db003d38836514f41dc6a4b2:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/fs_mark
 * [new ref]         05e77cad1a3d3367db003d38836514f41dc6a4b2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 05e77ca Eliminate use of obsolete %patchN syntax (#2283636)