$ git clone -n https://src.fedoraproject.org/rpms/rust-async-lock2.git /var/lib/mock/f45-build-40273-770/root/chroot_tmpdir/scmroot/rust-async-lock2
Cloning into '/var/lib/mock/f45-build-40273-770/root/chroot_tmpdir/scmroot/rust-async-lock2'...
$ git fetch origin 984978ac1bd3693b86ce5f57753d0d0ca5600252:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-async-lock2
 * [new ref]         984978ac1bd3693b86ce5f57753d0d0ca5600252 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 984978a Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild