$ git clone -n https://src.fedoraproject.org/rpms/manifest-tool.git /var/lib/mock/f40-build-2334887-59334/root/chroot_tmpdir/scmroot/manifest-tool
Cloning into '/var/lib/mock/f40-build-2334887-59334/root/chroot_tmpdir/scmroot/manifest-tool'...
$ git fetch origin 3b6b68cfd22922d647f3b5e863c198a2af505e38:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/manifest-tool
 * [new ref]         3b6b68cfd22922d647f3b5e863c198a2af505e38 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3b6b68c Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild