$ git clone -n https://src.fedoraproject.org/rpms/GConf2.git /var/lib/mock/f39-build-1533033-36226/root/chroot_tmpdir/scmroot/GConf2
Cloning into '/var/lib/mock/f39-build-1533033-36226/root/chroot_tmpdir/scmroot/GConf2'...
$ git fetch origin f91a8d024a0b613aff1bd740afa2f18e0fa8c439:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/GConf2
 * [new ref]         f91a8d024a0b613aff1bd740afa2f18e0fa8c439 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f91a8d0 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild