$ git clone -n https://src.fedoraproject.org/rpms/gnome-bluetooth.git /var/lib/mock/f41-build-852628-166430/root/chroot_tmpdir/scmroot/gnome-bluetooth
Cloning into '/var/lib/mock/f41-build-852628-166430/root/chroot_tmpdir/scmroot/gnome-bluetooth'...
$ git fetch origin 988df1f2e2ff1dcc7643ef5615b34183655514d1:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gnome-bluetooth
 * [new ref]         988df1f2e2ff1dcc7643ef5615b34183655514d1 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 988df1f Update to 47.rc