$ git clone -n https://src.fedoraproject.org/rpms/mozjs78.git /var/lib/mock/f33-build-489091-64013/root/chroot_tmpdir/scmroot/mozjs78
Cloning into '/var/lib/mock/f33-build-489091-64013/root/chroot_tmpdir/scmroot/mozjs78'...
$ git reset --hard 26c6ed709e740da98891bd5b6bd67c86ca257487
HEAD is now at 26c6ed7 Release 78.6.0