$ git clone -n https://src.fedoraproject.org/rpms/rust-sval.git /var/lib/mock/f39-build-2165742-50984/root/chroot_tmpdir/scmroot/rust-sval
Cloning into '/var/lib/mock/f39-build-2165742-50984/root/chroot_tmpdir/scmroot/rust-sval'...
$ git fetch origin d115d7c301be3bafe4074eff2e9554fb1950fbc0:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-sval
 * [new ref]         d115d7c301be3bafe4074eff2e9554fb1950fbc0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d115d7c Update to version 2.10.2; Fixes RHBZ#2239957