$ git clone -n https://src.fedoraproject.org/rpms/rust-async-executor.git /var/lib/mock/f39-build-2204409-51953/root/chroot_tmpdir/scmroot/rust-async-executor
Cloning into '/var/lib/mock/f39-build-2204409-51953/root/chroot_tmpdir/scmroot/rust-async-executor'...
$ git fetch origin deaebe89ddef2d32fe34302aa6a98f2578e244f1:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-async-executor
 * [new ref]         deaebe89ddef2d32fe34302aa6a98f2578e244f1 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at deaebe8 Update to version 1.8.0; Fixes RHBZ#2250457