$ git clone -n http://fedora.riscv.rocks:3000/rpms/rubygem-cairo.git /var/lib/mock/f42-build-865444-173136/root/chroot_tmpdir/scmroot/rubygem-cairo
Cloning into '/var/lib/mock/f42-build-865444-173136/root/chroot_tmpdir/scmroot/rubygem-cairo'...
$ git fetch origin 1e96c8a43fa17b4f69faaa6a15c7bd55ba221e92:KOJI_FETCH_HEAD
From http://fedora.riscv.rocks:3000/rpms/rubygem-cairo
 * [new ref]         1e96c8a43fa17b4f69faaa6a15c7bd55ba221e92 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1e96c8a Merge remote-tracking branch 'up/main' into main-riscv64