$ git clone -n https://src.fedoraproject.org/rpms/golang-github-emersion-imap.git /var/lib/mock/f40-build-2696787-69771/root/chroot_tmpdir/scmroot/golang-github-emersion-imap
Cloning into '/var/lib/mock/f40-build-2696787-69771/root/chroot_tmpdir/scmroot/golang-github-emersion-imap'...
$ git fetch origin b4d86d5be22d879cf3f8f2f99b217a5258a8a09c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-github-emersion-imap
 * [new ref]         b4d86d5be22d879cf3f8f2f99b217a5258a8a09c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b4d86d5 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild