$ git clone -n https://src.fedoraproject.org/rpms/rust-time.git /var/lib/mock/f40-build-2259448-54370/root/chroot_tmpdir/scmroot/rust-time
Cloning into '/var/lib/mock/f40-build-2259448-54370/root/chroot_tmpdir/scmroot/rust-time'...
$ git fetch origin 624b9ecbe1583a0415d9de12b93afd6ff0733356:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-time
 * [new ref]         624b9ecbe1583a0415d9de12b93afd6ff0733356 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 624b9ec Update to version 0.3.31; Fixes RHBZ#2255215