$ git clone -n https://src.fedoraproject.org/rpms/rust-xml5ever.git /var/lib/mock/f40-build-2326309-58829/root/chroot_tmpdir/scmroot/rust-xml5ever
Cloning into '/var/lib/mock/f40-build-2326309-58829/root/chroot_tmpdir/scmroot/rust-xml5ever'...
$ git fetch origin 68cdb880f54006b6497b06ee2985c971918d33b2:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-xml5ever
 * [new ref]         68cdb880f54006b6497b06ee2985c971918d33b2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 68cdb88 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild