$ git clone -n https://src.fedoraproject.org/rpms/rust-atk0.15.git /var/lib/mock/f40-build-2231107-53258/root/chroot_tmpdir/scmroot/rust-atk0.15
Cloning into '/var/lib/mock/f40-build-2231107-53258/root/chroot_tmpdir/scmroot/rust-atk0.15'...
$ git fetch origin c739b7c4ef0f0aabca9a82158df5e2d29ea5c211:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-atk0.15
 * [new ref]         c739b7c4ef0f0aabca9a82158df5e2d29ea5c211 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c739b7c Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild