$ git clone -n https://src.fedoraproject.org/rpms/mlt.git /var/lib/mock/f39-build-1977864-43334/root/chroot_tmpdir/scmroot/mlt
Cloning into '/var/lib/mock/f39-build-1977864-43334/root/chroot_tmpdir/scmroot/mlt'...
$ git fetch origin 5a00e7fc049497f52cf14a05b633b8e154504a0b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/mlt
 * [new ref]         5a00e7fc049497f52cf14a05b633b8e154504a0b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5a00e7f Update mlt to 7.22.0 (#2252089)