$ git clone -n https://src.fedoraproject.org/rpms/gdb-gef.git /var/lib/mock/f41-build-side-1-3103870-39363/root/chroot_tmpdir/scmroot/gdb-gef
Cloning into '/var/lib/mock/f41-build-side-1-3103870-39363/root/chroot_tmpdir/scmroot/gdb-gef'...
$ git fetch origin 2b136665382652fc705c1d3417b021b722d14a2d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gdb-gef
 * [new ref]         2b136665382652fc705c1d3417b021b722d14a2d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2b13666 Update got-audit with symbol collection from the executable.