$ git clone -n https://src.fedoraproject.org/rpms/rust-vm-allocator.git /var/lib/mock/f40-build-2683941-67976/root/chroot_tmpdir/scmroot/rust-vm-allocator
Cloning into '/var/lib/mock/f40-build-2683941-67976/root/chroot_tmpdir/scmroot/rust-vm-allocator'...
$ git fetch origin 827e9f63db210c5e48b46e64e4c1a3e3136b6cbe:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-vm-allocator
 * [new ref]         827e9f63db210c5e48b46e64e4c1a3e3136b6cbe -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 827e9f6 Update to version 0.1.1