$ git clone -n https://src.fedoraproject.org/rpms/ghc-regex-base.git /var/lib/mock/f31-build-54782-28055/root/chroot_tmpdir/scmroot/ghc-regex-base
Cloning into '/var/lib/mock/f31-build-54782-28055/root/chroot_tmpdir/scmroot/ghc-regex-base'...
$ git reset --hard 5994b1cc9ec4b6322d117155ca6870c2a9c20458
HEAD is now at 5994b1c refresh to cabal-rpm-0.13