$ git clone -n https://src.fedoraproject.org/rpms/bluez.git /var/lib/mock/f42-build-side-1-3587104-46928/root/chroot_tmpdir/scmroot/bluez
Cloning into '/var/lib/mock/f42-build-side-1-3587104-46928/root/chroot_tmpdir/scmroot/bluez'...
$ git fetch origin 4bb690fbcab07fe1b0ff25cc128cd23dcc4f10be:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/bluez
 * [new ref]         4bb690fbcab07fe1b0ff25cc128cd23dcc4f10be -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4bb690f Fix for single commands without BT shell