$ git clone -n https://src.fedoraproject.org/rpms/rust-time.git /var/lib/mock/f38-build-side-42-init-devel-1130642-30311/root/chroot_tmpdir/scmroot/rust-time
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-1130642-30311/root/chroot_tmpdir/scmroot/rust-time'...
$ git fetch origin f994d324d9ddaa83044d4100e55b862c78a44e06:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-time
 * [new ref]         f994d324d9ddaa83044d4100e55b862c78a44e06 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f994d32 Update to version 0.3.23; Fixes RHBZ#2221448