$ git clone -n https://src.fedoraproject.org/rpms/rust-enumflags2.git /var/lib/mock/f40-build-2712318-71989/root/chroot_tmpdir/scmroot/rust-enumflags2
Cloning into '/var/lib/mock/f40-build-2712318-71989/root/chroot_tmpdir/scmroot/rust-enumflags2'...
$ git fetch origin 97e9bcd80b3eb4f305cd1e48b975b0595c4fb0a9:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-enumflags2
 * [new ref]         97e9bcd80b3eb4f305cd1e48b975b0595c4fb0a9 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 97e9bcd Update to version 0.7.9; Fixes RHBZ#2263819