$ git clone -n https://src.fedoraproject.org/rpms/fvwm.git /var/lib/mock/f41-build-side-1-2635839-26162/root/chroot_tmpdir/scmroot/fvwm
Cloning into '/var/lib/mock/f41-build-side-1-2635839-26162/root/chroot_tmpdir/scmroot/fvwm'...
$ git fetch origin 611f7e205b9310b9669437f33c6b52ddd7c43326:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/fvwm
 * [new ref]         611f7e205b9310b9669437f33c6b52ddd7c43326 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 611f7e2 convert GPLv2+ license to SPDX