$ git clone -n https://src.fedoraproject.org/rpms/opus.git /var/lib/mock/f40-build-760974-121325/root/chroot_tmpdir/scmroot/opus
Cloning into '/var/lib/mock/f40-build-760974-121325/root/chroot_tmpdir/scmroot/opus'...
$ git fetch origin c3ad3d6ec0d7c966dfd5a27a4fc077af93e18d16:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/opus
 * [new ref]         c3ad3d6ec0d7c966dfd5a27a4fc077af93e18d16 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c3ad3d6 Add mingw subpackages