$ git clone -n https://src.fedoraproject.org/rpms/mediawiki-SpecialInterwiki.git /var/lib/mock/f40-build-2265279-54596/root/chroot_tmpdir/scmroot/mediawiki-SpecialInterwiki
Cloning into '/var/lib/mock/f40-build-2265279-54596/root/chroot_tmpdir/scmroot/mediawiki-SpecialInterwiki'...
$ git fetch origin 25c41af55927a56bb3ff6977b329bb1cd4060549:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/mediawiki-SpecialInterwiki
 * [new ref]         25c41af55927a56bb3ff6977b329bb1cd4060549 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 25c41af Orphaned for 6+ weeks