$ git clone -n https://src.fedoraproject.org/rpms/fetchlog.git /var/lib/mock/f40-build-1996349-44005/root/chroot_tmpdir/scmroot/fetchlog
Cloning into '/var/lib/mock/f40-build-1996349-44005/root/chroot_tmpdir/scmroot/fetchlog'...
$ git fetch origin e5ff928bcbe943b78212f22786178f7f6f4220a2:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/fetchlog
 * [new ref]         e5ff928bcbe943b78212f22786178f7f6f4220a2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e5ff928 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild