$ git clone -n https://src.fedoraproject.org/rpms/ghc-torrent.git /var/lib/mock/f40-build-776741-129081/root/chroot_tmpdir/scmroot/ghc-torrent
Cloning into '/var/lib/mock/f40-build-776741-129081/root/chroot_tmpdir/scmroot/ghc-torrent'...
$ git fetch origin 28a539924c253e818f1c64a7d2d145fccd3e44b8:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-torrent
 * [new ref]         28a539924c253e818f1c64a7d2d145fccd3e44b8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 28a5399 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild