$ git clone -n https://src.fedoraproject.org/rpms/btrfs-progs.git /var/lib/mock/f38-build-691537-82901/root/chroot_tmpdir/scmroot/btrfs-progs
Cloning into '/var/lib/mock/f38-build-691537-82901/root/chroot_tmpdir/scmroot/btrfs-progs'...
$ git reset --hard ae500ad1925f2d184477569a688683a321d348b5
HEAD is now at ae500ad Update to 6.2.1