$ git clone -n https://src.fedoraproject.org/rpms/rust-allocator-api2.git /var/lib/mock/f39-build-1543392-36558/root/chroot_tmpdir/scmroot/rust-allocator-api2
Cloning into '/var/lib/mock/f39-build-1543392-36558/root/chroot_tmpdir/scmroot/rust-allocator-api2'...
$ git fetch origin a57381804f620168ef9c3681d1de9fe8d6a41fed:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-allocator-api2
 * [new ref]         a57381804f620168ef9c3681d1de9fe8d6a41fed -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a573818 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild