$ git clone -n https://src.fedoraproject.org/rpms/bwm-ng.git /var/lib/mock/f41-build-875039-16267/root/chroot_tmpdir/scmroot/bwm-ng
Cloning into '/var/lib/mock/f41-build-875039-16267/root/chroot_tmpdir/scmroot/bwm-ng'...
$ git fetch origin 0e6fc58212b5b9bb85b89f458d49d929ffc8a227:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/bwm-ng
 * [new ref]         0e6fc58212b5b9bb85b89f458d49d929ffc8a227 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0e6fc58 Eliminate use of obsolete %patchN syntax (#2283636)