$ git clone -n https://src.fedoraproject.org/rpms/rust-mockall_double.git /var/lib/mock/f40-build-2082824-49869/root/chroot_tmpdir/scmroot/rust-mockall_double
Cloning into '/var/lib/mock/f40-build-2082824-49869/root/chroot_tmpdir/scmroot/rust-mockall_double'...
$ git fetch origin c2bc16f25ff6c054ac20c990e4e993cdba073eb7:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-mockall_double
 * [new ref]         c2bc16f25ff6c054ac20c990e4e993cdba073eb7 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c2bc16f Regenerate with rust2rpm v24