$ git clone -n https://src.fedoraproject.org/rpms/rust-bitflags.git /var/lib/mock/f39-build-1717043-41229/root/chroot_tmpdir/scmroot/rust-bitflags
Cloning into '/var/lib/mock/f39-build-1717043-41229/root/chroot_tmpdir/scmroot/rust-bitflags'...
$ git fetch origin 0af9c2d45796634fd829135de3acb1b81c5e8e06:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-bitflags
 * [new ref]         0af9c2d45796634fd829135de3acb1b81c5e8e06 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0af9c2d Update to version 2.4.1; Fixes RHBZ#2244330