$ git clone -n https://src.fedoraproject.org/rpms/vbindiff.git /var/lib/mock/f41-build-1164886-21591/root/chroot_tmpdir/scmroot/vbindiff
Cloning into '/var/lib/mock/f41-build-1164886-21591/root/chroot_tmpdir/scmroot/vbindiff'...
$ git fetch origin 3ffcf6515bc13c492291b7580cf2074772df75cb:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/vbindiff
 * [new ref]         3ffcf6515bc13c492291b7580cf2074772df75cb -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3ffcf65 Eliminate use of obsolete %patchN syntax (#2283636)