$ git clone -n https://src.fedoraproject.org/rpms/docbook2X.git /var/lib/mock/f31-build-69306-30305/root/chroot_tmpdir/scmroot/docbook2X
Cloning into '/var/lib/mock/f31-build-69306-30305/root/chroot_tmpdir/scmroot/docbook2X'...
$ git reset --hard c0904e38081323d68f4a7c288ad3bb49105582e3
HEAD is now at c0904e3 - Rebuilt for https://fedoraproject.org/wiki/Fedora_31_Mass_Rebuild