$ git clone -n https://src.fedoraproject.org/rpms/ghc-language-c99.git /var/lib/mock/f40-build-777489-129377/root/chroot_tmpdir/scmroot/ghc-language-c99
Cloning into '/var/lib/mock/f40-build-777489-129377/root/chroot_tmpdir/scmroot/ghc-language-c99'...
$ git fetch origin 68c94a038cd834679d49ea5f2881d08de49d9cda:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-language-c99
 * [new ref]         68c94a038cd834679d49ea5f2881d08de49d9cda -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 68c94a0 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild