$ git clone -n https://src.fedoraproject.org/rpms/procyon.git /var/lib/mock/f41-build-833855-14943/root/chroot_tmpdir/scmroot/procyon
Cloning into '/var/lib/mock/f41-build-833855-14943/root/chroot_tmpdir/scmroot/procyon'...
$ git fetch origin 4d21205f0126061ee2cf095ef89434bd18f7b87a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/procyon
 * [new ref]         4d21205f0126061ee2cf095ef89434bd18f7b87a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4d21205 Eliminate use of obsolete %patchN syntax (#2283636)