$ git clone -n https://src.fedoraproject.org/rpms/xterm.git /var/lib/mock/f45-build-39157-732/root/chroot_tmpdir/scmroot/xterm
Cloning into '/var/lib/mock/f45-build-39157-732/root/chroot_tmpdir/scmroot/xterm'...
$ git fetch origin a7068e007985dd0c984ed93e62e2d34a0eb38f42:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/xterm
 * [new ref]         a7068e007985dd0c984ed93e62e2d34a0eb38f42 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a7068e0 Rebase to 411