$ git clone -n https://github.com/xcp-ng-rpms/curl.git /var/lib/mock/v8.3-incoming-10065-28689/root/chroot_tmpdir/scmroot/curl
Cloning into '/var/lib/mock/v8.3-incoming-10065-28689/root/chroot_tmpdir/scmroot/curl'...
$ git fetch origin 49a2607824fb24a80c7b32015846919ff195405b:KOJI_FETCH_HEAD
From https://github.com/xcp-ng-rpms/curl
 * [new ref]         49a2607824fb24a80c7b32015846919ff195405b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 49a2607 Rebuild for openssl3