$ git clone -n https://src.fedoraproject.org/rpms/ghc-mmap.git /var/lib/mock/f31-build-112002-34238/root/chroot_tmpdir/scmroot/ghc-mmap
Cloning into '/var/lib/mock/f31-build-112002-34238/root/chroot_tmpdir/scmroot/ghc-mmap'...
$ git reset --hard 2851b9912ac70f77b3121a70133f22d8ce64624f
HEAD is now at 2851b99 BR prof for lib and static for executable