$ git clone -n https://src.fedoraproject.org/rpms/libfprint.git /var/lib/mock/f41-build-854401-166862/root/chroot_tmpdir/scmroot/libfprint
Cloning into '/var/lib/mock/f41-build-854401-166862/root/chroot_tmpdir/scmroot/libfprint'...
$ git fetch origin 3a96323138fd2e08e341f5fdf6a41180c82a5994:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libfprint
 * [new ref]         3a96323138fd2e08e341f5fdf6a41180c82a5994 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3a96323 Update to upstream version 1.94.8