$ git clone -n https://src.fedoraproject.org/rpms/rubygem-bootsnap.git /var/lib/mock/f42-build-865329-173025/root/chroot_tmpdir/scmroot/rubygem-bootsnap
Cloning into '/var/lib/mock/f42-build-865329-173025/root/chroot_tmpdir/scmroot/rubygem-bootsnap'...
$ git fetch origin 576f902f50801092954a768f09bd3ad2519ae7d8:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rubygem-bootsnap
 * [new ref]         576f902f50801092954a768f09bd3ad2519ae7d8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 576f902 Rebuilt for https://fedoraproject.org/wiki/Changes/Ruby_3.4