$ git clone -n https://src.fedoraproject.org/rpms/khelpcenter.git /var/lib/mock/f41-build-860409-168945/root/chroot_tmpdir/scmroot/khelpcenter
Cloning into '/var/lib/mock/f41-build-860409-168945/root/chroot_tmpdir/scmroot/khelpcenter'...
$ git fetch origin a180094569f1dece5c88b2561078eb9b5c9adfc0:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/khelpcenter
 * [new ref]         a180094569f1dece5c88b2561078eb9b5c9adfc0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a180094 Backport Perl->Python manpage search conversion