$ git clone -n https://src.fedoraproject.org/rpms/guilt.git /var/lib/mock/f39-build-1535805-36250/root/chroot_tmpdir/scmroot/guilt
Cloning into '/var/lib/mock/f39-build-1535805-36250/root/chroot_tmpdir/scmroot/guilt'...
$ git fetch origin f5fa0dc9c7203762f10889c4294d4682249786ad:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/guilt
 * [new ref]         f5fa0dc9c7203762f10889c4294d4682249786ad -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f5fa0dc Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild