$ git clone -n https://src.fedoraproject.org/rpms/pidgin-guifications.git /var/lib/mock/f41-build-side-1-2753491-31224/root/chroot_tmpdir/scmroot/pidgin-guifications
Cloning into '/var/lib/mock/f41-build-side-1-2753491-31224/root/chroot_tmpdir/scmroot/pidgin-guifications'...
$ git fetch origin e9856345ad2cfacf3d185003cbbfac7ff76f07d1:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/pidgin-guifications
 * [new ref]         e9856345ad2cfacf3d185003cbbfac7ff76f07d1 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e985634 Orphaned for 6+ weeks