$ git clone -n https://src.fedoraproject.org/rpms/rust-timer.git /var/lib/mock/f39-build-1445445-32653/root/chroot_tmpdir/scmroot/rust-timer
Cloning into '/var/lib/mock/f39-build-1445445-32653/root/chroot_tmpdir/scmroot/rust-timer'...
$ git fetch origin 3e999fb7fc3a68cebfc45c784ced5d068dbd5d8e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-timer
 * [new ref]         3e999fb7fc3a68cebfc45c784ced5d068dbd5d8e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3e999fb Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild