$ git clone -n https://src.fedoraproject.org/rpms/apache-commons-io.git /var/lib/mock/f40-build-2597901-62879/root/chroot_tmpdir/scmroot/apache-commons-io
Cloning into '/var/lib/mock/f40-build-2597901-62879/root/chroot_tmpdir/scmroot/apache-commons-io'...
$ git fetch origin ebba9b49ea2f4e7912d29f2dacbf61ea0822d477:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/apache-commons-io
 * [new ref]         ebba9b49ea2f4e7912d29f2dacbf61ea0822d477 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ebba9b4 Rebuilt for java-21-openjdk as system jdk