$ git clone -n https://src.fedoraproject.org/rpms/gnome-bluetooth.git /var/lib/mock/f41-build-836995-158946/root/chroot_tmpdir/scmroot/gnome-bluetooth
Cloning into '/var/lib/mock/f41-build-836995-158946/root/chroot_tmpdir/scmroot/gnome-bluetooth'...
$ git fetch origin 4c107d5b8ddcffd34a1f734e7820193b5a4073d6:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gnome-bluetooth
 * [new ref]         4c107d5b8ddcffd34a1f734e7820193b5a4073d6 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4c107d5 Update to 47.beta