$ git clone -n https://src.fedoraproject.org/rpms/ghc8.10.git /var/lib/mock/f40-build-806441-145129/root/chroot_tmpdir/scmroot/ghc8.10
Cloning into '/var/lib/mock/f40-build-806441-145129/root/chroot_tmpdir/scmroot/ghc8.10'...
$ git fetch origin c3b49eafdfd5ceea64d0b5bf60cf9bc00b211557:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc8.10
 * [new ref]         c3b49eafdfd5ceea64d0b5bf60cf9bc00b211557 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c3b49ea Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild