$ git clone -n https://src.fedoraproject.org/rpms/scponly.git /var/lib/mock/f41-build-1049363-19179/root/chroot_tmpdir/scmroot/scponly
Cloning into '/var/lib/mock/f41-build-1049363-19179/root/chroot_tmpdir/scmroot/scponly'...
$ git fetch origin a5415b0f601e728874901212e0d9a8a5563ed67c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/scponly
 * [new ref]         a5415b0f601e728874901212e0d9a8a5563ed67c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a5415b0 Eliminate use of obsolete %patchN syntax (#2283636)