$ git clone -n https://src.fedoraproject.org/rpms/python-authheaders.git /var/lib/mock/f39-build-1432673-31854/root/chroot_tmpdir/scmroot/python-authheaders
Cloning into '/var/lib/mock/f39-build-1432673-31854/root/chroot_tmpdir/scmroot/python-authheaders'...
$ git fetch origin 33ccaf0ab49ce4b1edc20357962fe19c7c89ac38:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-authheaders
 * [new ref]         33ccaf0ab49ce4b1edc20357962fe19c7c89ac38 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 33ccaf0 Update to 0.15.3