$ git clone -n https://src.fedoraproject.org/rpms/bash.git /var/lib/mock/f42-build-3426622-45197/root/chroot_tmpdir/scmroot/bash
Cloning into '/var/lib/mock/f42-build-3426622-45197/root/chroot_tmpdir/scmroot/bash'...
$ git fetch origin d91049b0fa149d71272df9b3da8f712ef00e3057:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/bash
 * [new ref]         d91049b0fa149d71272df9b3da8f712ef00e3057 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d91049b Rebuilt for https://fedoraproject.org/wiki/Fedora_42_Mass_Rebuild