$ git clone -n https://src.fedoraproject.org/rpms/tuxpuck.git /var/lib/mock/f41-build-1042160-18998/root/chroot_tmpdir/scmroot/tuxpuck
Cloning into '/var/lib/mock/f41-build-1042160-18998/root/chroot_tmpdir/scmroot/tuxpuck'...
$ git fetch origin 80d092be866844e47b27b73e1d09e2b3b9e2462c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/tuxpuck
 * [new ref]         80d092be866844e47b27b73e1d09e2b3b9e2462c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 80d092b Eliminate use of obsolete %patchN syntax (#2283636)