$ git clone -n https://src.fedoraproject.org/rpms/kdewebdev.git /var/lib/mock/f41-build-side-1-3102785-39354/root/chroot_tmpdir/scmroot/kdewebdev
Cloning into '/var/lib/mock/f41-build-side-1-3102785-39354/root/chroot_tmpdir/scmroot/kdewebdev'...
$ git fetch origin 2c1cf6686287bff19ab5e21940f7c9e2fcee62a7:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kdewebdev
 * [new ref]         2c1cf6686287bff19ab5e21940f7c9e2fcee62a7 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2c1cf66 convert GPLv2 license to SPDX