$ git clone -n https://src.fedoraproject.org/rpms/zchunk.git /var/lib/mock/f41-build-814211-148916/root/chroot_tmpdir/scmroot/zchunk
Cloning into '/var/lib/mock/f41-build-814211-148916/root/chroot_tmpdir/scmroot/zchunk'...
$ git fetch origin aeaa7ef63585cf676b26c6fc15139accf6ad4ee9:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/zchunk
 * [new ref]         aeaa7ef63585cf676b26c6fc15139accf6ad4ee9 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at aeaa7ef Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild