$ git clone -n https://src.fedoraproject.org/rpms/rutabaga-gfx-ffi.git /var/lib/mock/f40-build-2440112-60975/root/chroot_tmpdir/scmroot/rutabaga-gfx-ffi
Cloning into '/var/lib/mock/f40-build-2440112-60975/root/chroot_tmpdir/scmroot/rutabaga-gfx-ffi'...
$ git fetch origin 59f14d77d8c83e80425db522b74ce706255a7787:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rutabaga-gfx-ffi
 * [new ref]         59f14d77d8c83e80425db522b74ce706255a7787 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 59f14d7 Update to 0.1.3