$ git clone -n https://src.fedoraproject.org/rpms/rubygem-ammeter.git /var/lib/mock/f40-build-2352941-60236/root/chroot_tmpdir/scmroot/rubygem-ammeter
Cloning into '/var/lib/mock/f40-build-2352941-60236/root/chroot_tmpdir/scmroot/rubygem-ammeter'...
$ git fetch origin 62d5bc68ef882495b651263cfe012a4acc2eeb9d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rubygem-ammeter
 * [new ref]         62d5bc68ef882495b651263cfe012a4acc2eeb9d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 62d5bc6 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild