$ git clone -n https://src.fedoraproject.org/rpms/rubygem-glut.git /var/lib/mock/f40-build-733950-105596/root/chroot_tmpdir/scmroot/rubygem-glut
Cloning into '/var/lib/mock/f40-build-733950-105596/root/chroot_tmpdir/scmroot/rubygem-glut'...
$ git fetch origin d7ac54d11e6c14fb8e5e9657aea38ce57984fc47:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rubygem-glut
 * [new ref]         d7ac54d11e6c14fb8e5e9657aea38ce57984fc47 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d7ac54d Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild