$ git clone -n https://src.fedoraproject.org/rpms/bluedevil.git /var/lib/mock/f40-build-2184779-51282/root/chroot_tmpdir/scmroot/bluedevil
Cloning into '/var/lib/mock/f40-build-2184779-51282/root/chroot_tmpdir/scmroot/bluedevil'...
$ git fetch origin f8d0a283050503d0524aa8aff1f03afa2b05151b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/bluedevil
 * [new ref]         f8d0a283050503d0524aa8aff1f03afa2b05151b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f8d0a28 5.91.0