$ git clone -n https://src.fedoraproject.org/rpms/mlt.git /var/lib/mock/f45-build-18994-539/root/chroot_tmpdir/scmroot/mlt
Cloning into '/var/lib/mock/f45-build-18994-539/root/chroot_tmpdir/scmroot/mlt'...
$ git fetch origin 51c0e47f9825fc1015541516fe0df2cdb8b8a142:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/mlt
 * [new ref]         51c0e47f9825fc1015541516fe0df2cdb8b8a142 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 51c0e47 Rebuilt for libxml-2.15.4