$ git clone -n https://src.fedoraproject.org/rpms/ghc-data-default-instances-old-locale.git /var/lib/mock/f40-build-776311-128763/root/chroot_tmpdir/scmroot/ghc-data-default-instances-old-locale
Cloning into '/var/lib/mock/f40-build-776311-128763/root/chroot_tmpdir/scmroot/ghc-data-default-instances-old-locale'...
$ git fetch origin cec7d52e428a949f74dc64b52b55a9e58ef3da05:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-data-default-instances-old-locale
 * [new ref]         cec7d52e428a949f74dc64b52b55a9e58ef3da05 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at cec7d52 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild