$ git clone -n https://src.fedoraproject.org/rpms/bluedevil.git /var/lib/mock/f39-build-1654300-40520/root/chroot_tmpdir/scmroot/bluedevil
Cloning into '/var/lib/mock/f39-build-1654300-40520/root/chroot_tmpdir/scmroot/bluedevil'...
$ git fetch origin a6724bffc29f6211012b93101c0d0ec714bc0a67:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/bluedevil
 * [new ref]         a6724bffc29f6211012b93101c0d0ec714bc0a67 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a6724bf 5.27.9