$ git clone -n https://src.fedoraproject.org/rpms/rust-async-task.git /var/lib/mock/f40-build-2250430-54053/root/chroot_tmpdir/scmroot/rust-async-task
Cloning into '/var/lib/mock/f40-build-2250430-54053/root/chroot_tmpdir/scmroot/rust-async-task'...
$ git fetch origin 8229872370ec9a309cc2f485241df4ea96475441:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-async-task
 * [new ref]         8229872370ec9a309cc2f485241df4ea96475441 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8229872 Update to version 4.7.0; Fixes RHBZ#2254854