$ git clone -n https://src.fedoraproject.org/rpms/ghc-regex-posix.git /var/lib/mock/f33-build-317820-57820/root/chroot_tmpdir/scmroot/ghc-regex-posix
Cloning into '/var/lib/mock/f33-build-317820-57820/root/chroot_tmpdir/scmroot/ghc-regex-posix'...
$ git reset --hard 4c1c888d53a9c1a303cfc0de8485014474cb9721
HEAD is now at 4c1c888 - Second attempt - Rebuilt for https://fedoraproject.org/wiki/Fedora_33_Mass_Rebuild