$ git clone -n https://src.fedoraproject.org/rpms/lldb.git /var/lib/mock/f41-build-1021884-18041/root/chroot_tmpdir/scmroot/lldb
Cloning into '/var/lib/mock/f41-build-1021884-18041/root/chroot_tmpdir/scmroot/lldb'...
$ git fetch origin 0c410a2fb7f685e119257cf49ac912134f9c366b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/lldb
 * [new ref]         0c410a2fb7f685e119257cf49ac912134f9c366b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0c410a2 18.1.7 Release