$ git clone -n https://src.fedoraproject.org/rpms/rubygem-mini_magick.git /var/lib/mock/f38-build-side-42-init-devel-878356-28475/root/chroot_tmpdir/scmroot/rubygem-mini_magick
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-878356-28475/root/chroot_tmpdir/scmroot/rubygem-mini_magick'...
$ git fetch origin d9f6f38d921b89d8336f24595517d5ea3fb1b8cf:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rubygem-mini_magick
 * [new ref]         d9f6f38d921b89d8336f24595517d5ea3fb1b8cf -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d9f6f38 Rebuilt for https://fedoraproject.org/wiki/Fedora_38_Mass_Rebuild