$ git clone -n https://src.fedoraproject.org/rpms/libdmtx.git /var/lib/mock/f31-build-58484-28455/root/chroot_tmpdir/scmroot/libdmtx
Cloning into '/var/lib/mock/f31-build-58484-28455/root/chroot_tmpdir/scmroot/libdmtx'...
$ git reset --hard 3b7f07166a5d50a6fbc58d7c35ab90e3ef7fb1f6
HEAD is now at 3b7f071 - Rebuilt for https://fedoraproject.org/wiki/Fedora_30_Mass_Rebuild