$ git clone -n https://src.fedoraproject.org/rpms/rust-kdotool.git /var/lib/mock/f40-build-798243-141768/root/chroot_tmpdir/scmroot/rust-kdotool
Cloning into '/var/lib/mock/f40-build-798243-141768/root/chroot_tmpdir/scmroot/rust-kdotool'...
$ git fetch origin f9da71dedfbed99a7395e7dfeda3845a50e55ad9:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-kdotool
 * [new ref]         f9da71dedfbed99a7395e7dfeda3845a50e55ad9 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f9da71d Initial package