$ git clone -n https://src.fedoraproject.org/rpms/rust-shared_library.git /var/lib/mock/f39-build-1886148-42781/root/chroot_tmpdir/scmroot/rust-shared_library
Cloning into '/var/lib/mock/f39-build-1886148-42781/root/chroot_tmpdir/scmroot/rust-shared_library'...
$ git fetch origin e7be397912eb1b1455e0deb97ef087e4cc579dc2:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-shared_library
 * [new ref]         e7be397912eb1b1455e0deb97ef087e4cc579dc2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e7be397 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild