$ git clone -n https://src.fedoraproject.org/rpms/rubygem-pango.git /var/lib/mock/f41-build-740676-13309/root/chroot_tmpdir/scmroot/rubygem-pango
Cloning into '/var/lib/mock/f41-build-740676-13309/root/chroot_tmpdir/scmroot/rubygem-pango'...
$ git fetch origin 44aefff17c96a5909b4fd520f20b50c52993e312:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rubygem-pango
 * [new ref]         44aefff17c96a5909b4fd520f20b50c52993e312 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 44aefff 4.2.2 entry