$ git clone -n https://src.fedoraproject.org/rpms/rust-bitflags.git /var/lib/mock/f40-build-2576735-62280/root/chroot_tmpdir/scmroot/rust-bitflags
Cloning into '/var/lib/mock/f40-build-2576735-62280/root/chroot_tmpdir/scmroot/rust-bitflags'...
$ git fetch origin d88130801c009f90e8abe5a6ee3beb67ba6678ce:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-bitflags
 * [new ref]         d88130801c009f90e8abe5a6ee3beb67ba6678ce -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d881308 Update to version 2.5.0; Fixes RHBZ#2270212