$ git clone -n https://src.fedoraproject.org/rpms/rust-bitflags.git /var/lib/mock/f38-build-side-42-init-devel-1130553-30311/root/chroot_tmpdir/scmroot/rust-bitflags
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-1130553-30311/root/chroot_tmpdir/scmroot/rust-bitflags'...
$ git fetch origin a8acebe6e0a0c68ef0e0697e3a7cad458d7b4dd7:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-bitflags
 * [new ref]         a8acebe6e0a0c68ef0e0697e3a7cad458d7b4dd7 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a8acebe Update to version 2.3.3; Fixes RHBZ#2177627