$ git clone -n https://src.fedoraproject.org/rpms/mame.git /var/lib/mock/f31-build-85947-31639/root/chroot_tmpdir/scmroot/mame
Cloning into '/var/lib/mock/f31-build-85947-31639/root/chroot_tmpdir/scmroot/mame'...
$ git reset --hard 146b5a3b932547afe70c2658e7541ccaf7a626e6
HEAD is now at 146b5a3 Fix build using system rapidjson