$ git clone -n https://src.fedoraproject.org/rpms/rubygem-actionmailer.git /var/lib/mock/f40-build-2607674-63668/root/chroot_tmpdir/scmroot/rubygem-actionmailer
Cloning into '/var/lib/mock/f40-build-2607674-63668/root/chroot_tmpdir/scmroot/rubygem-actionmailer'...
$ git fetch origin 9e48678de7641409dbd4aada658902576ecbe656:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rubygem-actionmailer
 * [new ref]         9e48678de7641409dbd4aada658902576ecbe656 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9e48678 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild