$ git clone -n https://src.fedoraproject.org/rpms/libpng12.git /var/lib/mock/f33-build-293296-55079/root/chroot_tmpdir/scmroot/libpng12
Cloning into '/var/lib/mock/f33-build-293296-55079/root/chroot_tmpdir/scmroot/libpng12'...
$ git reset --hard 2e3f39ea0650c91a5bde51e55be646461583d525
HEAD is now at 2e3f39e - Rebuilt for https://fedoraproject.org/wiki/Fedora_33_Mass_Rebuild