$ git clone -n https://src.fedoraproject.org/rpms/firewalk.git /var/lib/mock/f40-build-795286-140106/root/chroot_tmpdir/scmroot/firewalk
Cloning into '/var/lib/mock/f40-build-795286-140106/root/chroot_tmpdir/scmroot/firewalk'...
$ git fetch origin 6ce1fe92b644af4c91d4a04d37f811563e932da7:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/firewalk
 * [new ref]         6ce1fe92b644af4c91d4a04d37f811563e932da7 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6ce1fe9 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild