$ git clone -n https://github.com/fedora-riscv/crash-gcore-command.git /var/lib/mock/f39-build-2398313-60544/root/chroot_tmpdir/scmroot/crash-gcore-command
Cloning into '/var/lib/mock/f39-build-2398313-60544/root/chroot_tmpdir/scmroot/crash-gcore-command'...
$ git fetch origin 7de905d3e695bfd5685e0b716cd9af217b4c921e:KOJI_FETCH_HEAD
From https://github.com/fedora-riscv/crash-gcore-command
 * [new ref]         7de905d3e695bfd5685e0b716cd9af217b4c921e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7de905d Rebuild for f39