$ git clone -n https://src.fedoraproject.org/rpms/libmodulemd1.git /var/lib/mock/f38-build-718568-96741/root/chroot_tmpdir/scmroot/libmodulemd1
Cloning into '/var/lib/mock/f38-build-718568-96741/root/chroot_tmpdir/scmroot/libmodulemd1'...
$ git fetch origin 12407ff43e25c8040c3b9e81478c81f9e635e84c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libmodulemd1
 * [new ref]         12407ff43e25c8040c3b9e81478c81f9e635e84c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 12407ff Skip valgrind on all arches