$ git clone -n https://src.fedoraproject.org/rpms/hexer.git /var/lib/mock/f42-build-3402161-45132/root/chroot_tmpdir/scmroot/hexer
Cloning into '/var/lib/mock/f42-build-3402161-45132/root/chroot_tmpdir/scmroot/hexer'...
$ git fetch origin 522abf729ae75649914feee82e224e81e42cc3c3:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/hexer
 * [new ref]         522abf729ae75649914feee82e224e81e42cc3c3 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 522abf7 Rebuilt for https://fedoraproject.org/wiki/Fedora_42_Mass_Rebuild