$ git clone -n https://src.fedoraproject.org/rpms/shake.git /var/lib/mock/f38-build-side-42-init-devel-1072097-29786/root/chroot_tmpdir/scmroot/shake
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-1072097-29786/root/chroot_tmpdir/scmroot/shake'...
$ git fetch origin f862ced8c3f7cd0f01f3166b659be0a0a2391388:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/shake
 * [new ref]         f862ced8c3f7cd0f01f3166b659be0a0a2391388 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f862ced update to 0.19.7