$ git clone -n https://src.fedoraproject.org/rpms/rust-bitflags.git /var/lib/mock/f45-build-40434-772/root/chroot_tmpdir/scmroot/rust-bitflags
Cloning into '/var/lib/mock/f45-build-40434-772/root/chroot_tmpdir/scmroot/rust-bitflags'...
$ git fetch origin ba5ddbb7a97383cc18594fc3cd20c7b7373005e9:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-bitflags
 * [new ref]         ba5ddbb7a97383cc18594fc3cd20c7b7373005e9 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ba5ddbb Update to version 2.13.1; Fixes RHBZ#2501188