$ git clone -n https://src.fedoraproject.org/rpms/ghc-cprng-aes.git /var/lib/mock/f40-build-2286100-55703/root/chroot_tmpdir/scmroot/ghc-cprng-aes
Cloning into '/var/lib/mock/f40-build-2286100-55703/root/chroot_tmpdir/scmroot/ghc-cprng-aes'...
$ git fetch origin 4f71cec56758ff116dade03dd6b2ad0211991d0a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-cprng-aes
 * [new ref]         4f71cec56758ff116dade03dd6b2ad0211991d0a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4f71cec Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild