$ git clone -n https://src.fedoraproject.org/rpms/rubygem-curb.git /var/lib/mock/f41-build-835503-158584/root/chroot_tmpdir/scmroot/rubygem-curb
Cloning into '/var/lib/mock/f41-build-835503-158584/root/chroot_tmpdir/scmroot/rubygem-curb'...
$ git fetch origin 769ceb32146022f442101651e98acb0beaefc267:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rubygem-curb
 * [new ref]         769ceb32146022f442101651e98acb0beaefc267 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 769ceb3 Apply upstram PR to build with curl 8.7+