$ git clone -n https://src.fedoraproject.org/rpms/python-bitarray.git /var/lib/mock/f40-build-760625-121125/root/chroot_tmpdir/scmroot/python-bitarray
Cloning into '/var/lib/mock/f40-build-760625-121125/root/chroot_tmpdir/scmroot/python-bitarray'...
$ git fetch origin f2caff1e68d5196438e93bc07b5f7ea3d6d418f9:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-bitarray
 * [new ref]         f2caff1e68d5196438e93bc07b5f7ea3d6d418f9 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f2caff1 Update to 2.8.5 (#2217191)