$ git clone -n https://src.fedoraproject.org/rpms/tumbler.git /var/lib/mock/f40-build-769162-125502/root/chroot_tmpdir/scmroot/tumbler
Cloning into '/var/lib/mock/f40-build-769162-125502/root/chroot_tmpdir/scmroot/tumbler'...
$ git reset --hard 857941ca09e4c798fe3733186740375b94db3400
HEAD is now at 857941c Update to v4.18.2