$ git clone -n https://src.fedoraproject.org/rpms/bluedevil.git /var/lib/mock/f40-build-2638681-66318/root/chroot_tmpdir/scmroot/bluedevil
Cloning into '/var/lib/mock/f40-build-2638681-66318/root/chroot_tmpdir/scmroot/bluedevil'...
$ git fetch origin 5ad30a4b72a1f2f8cb6ee9a6eb6d24ac476d1baf:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/bluedevil
 * [new ref]         5ad30a4b72a1f2f8cb6ee9a6eb6d24ac476d1baf -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5ad30a4 6.0.2