$ git clone -n https://src.fedoraproject.org/rpms/wf-shell.git /var/lib/mock/f39-build-1546533-36701/root/chroot_tmpdir/scmroot/wf-shell
Cloning into '/var/lib/mock/f39-build-1546533-36701/root/chroot_tmpdir/scmroot/wf-shell'...
$ git fetch origin f54a2286873f01fee95f4a31bb18fd082b5b99a8:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/wf-shell
 * [new ref]         f54a2286873f01fee95f4a31bb18fd082b5b99a8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f54a228 build: Update to 0.8.0