$ git clone -n https://src.fedoraproject.org/rpms/ghc-haskell-src-exts.git /var/lib/mock/f40-build-776399-128831/root/chroot_tmpdir/scmroot/ghc-haskell-src-exts
Cloning into '/var/lib/mock/f40-build-776399-128831/root/chroot_tmpdir/scmroot/ghc-haskell-src-exts'...
$ git fetch origin c26df8c7785cbbe09b9ff7d8c878c0d9af03ef88:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-haskell-src-exts
 * [new ref]         c26df8c7785cbbe09b9ff7d8c878c0d9af03ef88 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c26df8c Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild