$ git clone -n https://src.fedoraproject.org/rpms/gv.git /var/lib/mock/f41-build-1021554-18027/root/chroot_tmpdir/scmroot/gv
Cloning into '/var/lib/mock/f41-build-1021554-18027/root/chroot_tmpdir/scmroot/gv'...
$ git fetch origin 5bb6c242458ddfea926e4899288b57ca6ddc282b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gv
 * [new ref]         5bb6c242458ddfea926e4899288b57ca6ddc282b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5bb6c24 Eliminate use of obsolete %patchN syntax (#2283636)