$ git clone -n https://src.fedoraproject.org/rpms/rust-time.git /var/lib/mock/f40-build-2678488-67921/root/chroot_tmpdir/scmroot/rust-time
Cloning into '/var/lib/mock/f40-build-2678488-67921/root/chroot_tmpdir/scmroot/rust-time'...
$ git fetch origin 5eccb43161d51d1973e66aee8fed7fe77198b69c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-time
 * [new ref]         5eccb43161d51d1973e66aee8fed7fe77198b69c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5eccb43 Update to version 0.3.34; Fixes RHBZ#2262208