$ git clone -n https://src.fedoraproject.org/rpms/ghc-SafeSemaphore.git /var/lib/mock/f40-build-742964-110993/root/chroot_tmpdir/scmroot/ghc-SafeSemaphore
Cloning into '/var/lib/mock/f40-build-742964-110993/root/chroot_tmpdir/scmroot/ghc-SafeSemaphore'...
$ git reset --hard 210838c02de08377d0016b6a15af03153d6b57b3
HEAD is now at 210838c bump release