$ git clone -n https://src.fedoraproject.org/rpms/prboom.git /var/lib/mock/f33-build-144734-42915/root/chroot_tmpdir/scmroot/prboom
Cloning into '/var/lib/mock/f33-build-144734-42915/root/chroot_tmpdir/scmroot/prboom'...
$ git reset --hard 385c81dcce6374e0fcba52386139b4576a70972d
HEAD is now at 385c81d Fix FTBFS, libpng issue.