$ git clone -n https://src.fedoraproject.org/rpms/rust-awc.git /var/lib/mock/f40-build-1538272-23931/root/chroot_tmpdir/scmroot/rust-awc
Cloning into '/var/lib/mock/f40-build-1538272-23931/root/chroot_tmpdir/scmroot/rust-awc'...
$ git fetch origin ca732119138e5f10bbec36573f05116bafedba3b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-awc
 * [new ref]         ca732119138e5f10bbec36573f05116bafedba3b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ca73211 Update to version 3.5.0; Fixes RHBZ#2281482