$ git clone -n https://src.fedoraproject.org/rpms/bootc.git /var/lib/mock/f41-build-side-1-2882795-34494/root/chroot_tmpdir/scmroot/bootc
Cloning into '/var/lib/mock/f41-build-side-1-2882795-34494/root/chroot_tmpdir/scmroot/bootc'...
$ git fetch origin 0e8a6fe555e130e0653715dfd9f54645417196f7:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/bootc
 * [new ref]         0e8a6fe555e130e0653715dfd9f54645417196f7 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0e8a6fe https://github.com/containers/bootc/releases/tag/v0.1.16