$ git clone -n https://src.fedoraproject.org/rpms/rubygem-scanf.git /var/lib/mock/f40-build-2034327-47883/root/chroot_tmpdir/scmroot/rubygem-scanf
Cloning into '/var/lib/mock/f40-build-2034327-47883/root/chroot_tmpdir/scmroot/rubygem-scanf'...
$ git fetch origin 9189601fffe9307a3583dd8cb60c30d299ed081d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rubygem-scanf
 * [new ref]         9189601fffe9307a3583dd8cb60c30d299ed081d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9189601 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild