$ git clone -n https://src.fedoraproject.org/rpms/rust-async-lock.git /var/lib/mock/f45-build-40263-770/root/chroot_tmpdir/scmroot/rust-async-lock
Cloning into '/var/lib/mock/f45-build-40263-770/root/chroot_tmpdir/scmroot/rust-async-lock'...
$ git fetch origin cfc99d11fb3e5531c785ddad55abe6a6c7608b15:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-async-lock
 * [new ref]         cfc99d11fb3e5531c785ddad55abe6a6c7608b15 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at cfc99d1 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild