$ git clone -n https://src.fedoraproject.org/rpms/btrfs-progs.git /var/lib/mock/f38-build-702128-88949/root/chroot_tmpdir/scmroot/btrfs-progs
Cloning into '/var/lib/mock/f38-build-702128-88949/root/chroot_tmpdir/scmroot/btrfs-progs'...
$ git reset --hard b557c8beb817525322dbea6b4fbeb54528eec556
HEAD is now at b557c8b Add patch to force default sectorsize to 4k