$ git clone -n https://src.fedoraproject.org/rpms/rust-warp.git /var/lib/mock/f39-build-2186907-51377/root/chroot_tmpdir/scmroot/rust-warp
Cloning into '/var/lib/mock/f39-build-2186907-51377/root/chroot_tmpdir/scmroot/rust-warp'...
$ git fetch origin a196d5dff7a0b6d284111c82aee894a4995f3577:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-warp
 * [new ref]         a196d5dff7a0b6d284111c82aee894a4995f3577 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a196d5d Bump tracing-log dependency from 0.1 to 0.2