$ git clone -n https://src.fedoraproject.org/rpms/maven-source-plugin.git /var/lib/mock/f40-build-2676412-67859/root/chroot_tmpdir/scmroot/maven-source-plugin
Cloning into '/var/lib/mock/f40-build-2676412-67859/root/chroot_tmpdir/scmroot/maven-source-plugin'...
$ git fetch origin f3505be13c66e7c8764544f6a37553392c603bda:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/maven-source-plugin
 * [new ref]         f3505be13c66e7c8764544f6a37553392c603bda -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f3505be Rebuilt for java-21-openjdk as system jdk