$ git clone -n https://src.fedoraproject.org/rpms/ghc-hostname.git /var/lib/mock/f31-build-111762-34209/root/chroot_tmpdir/scmroot/ghc-hostname
Cloning into '/var/lib/mock/f31-build-111762-34209/root/chroot_tmpdir/scmroot/ghc-hostname'...
$ git reset --hard 0e26e09deb0fd87e359ce7b4283299688ce1ea85
HEAD is now at 0e26e09 BR prof for lib and static for executable