$ git clone -n https://src.fedoraproject.org/rpms/grep.git /var/lib/mock/f41-build-146-36/root/chroot_tmpdir/scmroot/grep
Cloning into '/var/lib/mock/f41-build-146-36/root/chroot_tmpdir/scmroot/grep'...
$ git fetch origin f8e0174a60bcc3ba539b1b7b57db920932b1b36f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/grep
 * [new ref]         f8e0174a60bcc3ba539b1b7b57db920932b1b36f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f8e0174 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild