$ git clone -n https://src.fedoraproject.org/rpms/rust-sval_test.git /var/lib/mock/f40-build-2144729-50871/root/chroot_tmpdir/scmroot/rust-sval_test
Cloning into '/var/lib/mock/f40-build-2144729-50871/root/chroot_tmpdir/scmroot/rust-sval_test'...
$ git fetch origin 975ec6474164115753040084936ed94c136629dc:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-sval_test
 * [new ref]         975ec6474164115753040084936ed94c136629dc -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 975ec64 Update to version 2.10.2; Fixes RHBZ#2239960