$ git clone -n https://github.com/xcp-ng-rpms/curl.git /var/lib/mock/v8.3-incoming-9048-27920/root/chroot_tmpdir/scmroot/curl
Cloning into '/var/lib/mock/v8.3-incoming-9048-27920/root/chroot_tmpdir/scmroot/curl'...
$ git fetch origin b455a69e0cb62686b67714d58efa040001664aca:KOJI_FETCH_HEAD
From https://github.com/xcp-ng-rpms/curl
 * [new ref]         b455a69e0cb62686b67714d58efa040001664aca -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b455a69 Rebuild for openssl3