$ git clone -n https://src.fedoraproject.org/rpms/libmodulemd.git /var/lib/mock/f42-build-side-1-3537729-46560/root/chroot_tmpdir/scmroot/libmodulemd
Cloning into '/var/lib/mock/f42-build-side-1-3537729-46560/root/chroot_tmpdir/scmroot/libmodulemd'...
$ git fetch origin 37ece006753344d82a4c020167c51083ebd93419:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libmodulemd
 * [new ref]         37ece006753344d82a4c020167c51083ebd93419 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 37ece00 Rewrite CI tests from STI to TMT