$ git clone -n https://src.fedoraproject.org/rpms/curl.git /var/lib/mock/f41-build-side-1-2811123-32926/root/chroot_tmpdir/scmroot/curl
Cloning into '/var/lib/mock/f41-build-side-1-2811123-32926/root/chroot_tmpdir/scmroot/curl'...
$ git fetch origin e685607ffd9adf33f28101db012be952b5196072:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/curl
 * [new ref]         e685607ffd9adf33f28101db012be952b5196072 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e685607 Make curl-config arch-independent