$ git clone -n https://src.fedoraproject.org/rpms/ghc-hxt.git /var/lib/mock/f31-build-100288-33244/root/chroot_tmpdir/scmroot/ghc-hxt
Cloning into '/var/lib/mock/f31-build-100288-33244/root/chroot_tmpdir/scmroot/ghc-hxt'...
$ git reset --hard 72056f4dac46c791f416b3fad7c3f99fb3dd5a76
HEAD is now at 72056f4 BR prof for lib and static for executable