$ git clone -n https://src.fedoraproject.org/rpms/ghc-tar.git /var/lib/mock/f40-build-776285-128713/root/chroot_tmpdir/scmroot/ghc-tar
Cloning into '/var/lib/mock/f40-build-776285-128713/root/chroot_tmpdir/scmroot/ghc-tar'...
$ git fetch origin 0ae012db1cdd6664d9bc593d706587cb306edf2d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-tar
 * [new ref]         0ae012db1cdd6664d9bc593d706587cb306edf2d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0ae012d Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild