$ git clone -n https://src.fedoraproject.org/rpms/firewalk.git /var/lib/mock/f40-build-752592-116812/root/chroot_tmpdir/scmroot/firewalk
Cloning into '/var/lib/mock/f40-build-752592-116812/root/chroot_tmpdir/scmroot/firewalk'...
$ git fetch origin 48b3af2dccc3aa79c2bd7515dc2ba6e7e9ef310e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/firewalk
 * [new ref]         48b3af2dccc3aa79c2bd7515dc2ba6e7e9ef310e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 48b3af2 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild