$ git clone -n https://src.fedoraproject.org/rpms/zimg.git /var/lib/mock/f40-build-788973-135468/root/chroot_tmpdir/scmroot/zimg
Cloning into '/var/lib/mock/f40-build-788973-135468/root/chroot_tmpdir/scmroot/zimg'...
$ git fetch origin ea04ba0a15f2baea91eeef44ce84d9720f895a7d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/zimg
 * [new ref]         ea04ba0a15f2baea91eeef44ce84d9720f895a7d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ea04ba0 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild