$ git clone -n https://src.fedoraproject.org/rpms/rust-tower-http.git /var/lib/mock/f41-build-1152525-21302/root/chroot_tmpdir/scmroot/rust-tower-http
Cloning into '/var/lib/mock/f41-build-1152525-21302/root/chroot_tmpdir/scmroot/rust-tower-http'...
$ git fetch origin bd18c57a2e4307e35b5c6cb423900339c786aa69:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-tower-http
 * [new ref]         bd18c57a2e4307e35b5c6cb423900339c786aa69 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at bd18c57 Relax sync_wrapper dev-dependency to allow building with v1