$ git clone -n https://src.fedoraproject.org/rpms/rust-time-core.git /var/lib/mock/f45-build-45469-823/root/chroot_tmpdir/scmroot/rust-time-core
Cloning into '/var/lib/mock/f45-build-45469-823/root/chroot_tmpdir/scmroot/rust-time-core'...
$ git fetch origin 9b7fb541d4920e89d725b26100b4df9ff9f8403b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-time-core
 * [new ref]         9b7fb541d4920e89d725b26100b4df9ff9f8403b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9b7fb54 Update to version 0.1.9; Resolves RHBZ#2488273