$ git clone -n https://src.fedoraproject.org/rpms/btrfs-progs.git /var/lib/mock/f33-build-175033-44433/root/chroot_tmpdir/scmroot/btrfs-progs
Cloning into '/var/lib/mock/f33-build-175033-44433/root/chroot_tmpdir/scmroot/btrfs-progs'...
$ git reset --hard e4cebf1d58b48d57d23b47497a70401e1c75cf8e
HEAD is now at e4cebf1 New upstream v5.6