$ git clone -n https://src.fedoraproject.org/rpms/ghc-concurrent-extra.git /var/lib/mock/f40-build-776385-128831/root/chroot_tmpdir/scmroot/ghc-concurrent-extra
Cloning into '/var/lib/mock/f40-build-776385-128831/root/chroot_tmpdir/scmroot/ghc-concurrent-extra'...
$ git fetch origin fb14a3ce10a746cfe5264c5093f6c8b741788768:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-concurrent-extra
 * [new ref]         fb14a3ce10a746cfe5264c5093f6c8b741788768 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at fb14a3c Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild