$ git clone -n https://src.fedoraproject.org/rpms/plexus-compiler.git /var/lib/mock/f38-build-side-42-init-devel-678515-26700/root/chroot_tmpdir/scmroot/plexus-compiler
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-678515-26700/root/chroot_tmpdir/scmroot/plexus-compiler'...
$ git fetch origin b98bcc90a11a66f8f8c0913a582dc74e115997dd:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/plexus-compiler
 * [new ref]         b98bcc90a11a66f8f8c0913a582dc74e115997dd -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b98bcc9 Rebuilt for https://fedoraproject.org/wiki/Fedora_38_Mass_Rebuild